Data/hora: 10/06/2024 03:39:54

Provedor de dados: | 5
País: | France
Título: | Genetic data, reproduction season and reproductive strategy data support the existence of biological species in Ophioderma longicauda
Autores: | Weber, Alexandra Anh-thu; Stohr, Sabine; Chenuil, Anne.
Data: | 2014-10
Ano: | 2014
Palavras-chave: | Ophiuroidea; Espèces cryptiques; Espèce incubante; Sous-unité I de la cytochrome oxydase; EPIC; Ophiuroidea; Cryptic species; Brooding species; Cytochrome oxidase subunit I; EPIC.
Resumo: | Cryptic species are numerous in the marine environment. The brittle star Ophioderma longicauda is composed of six mitochondrial lineages, encompassing brooders, which form a monophyletic group, and broadcasters, from which the brooders are derived. To clarify the species limits within O. longicauda, we compared the reproductive status of the sympatric lineages L1 and L3 (defined after sequencing a portion of the mitochondrial gene COI) during the month of May in Greece. In addition, we genotyped a nuclear marker, intron i51. Each L3 female was brooding, whereas all L1 specimens displayed full gonads, suggesting temporal pre-zygotic isolation between brooders and broadcasters. Statistical differences were found among lineages in morphology and bathymetric distribution. Finally, the intron i51 was polymorphic in L1 (60 individuals), but monomorphic in L3 (109 individuals), confirming the absence of gene flow between brooders and broadcasters. In conclusion, the broadcasting lineage L1 and the brooding lineage L3 are different biological species.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00372/48271/48576.pdf

DOI:10.1016/j.crvi.2014.07.007

https://archimer.ifremer.fr/doc/00372/48271/

Editor: | Elsevier France-editions Scientifiques Medicales Elsevier
Formato: | application/pdf
Fonte: | Comptes Rendus Biologies (1631-0691) (Elsevier France-editions Scientifiques Medicales Elsevier), 2014-10 , Vol. 337 , N. 10 , P. 553-560

Fonte:

2014 Acade´mie des sciences. Published by Elsevier Masson SAS. All rights reserved.

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